Unisex name · since 1912
Lewellyn
306 babies named Lewellyn in U.S. Social Security records since 1912, with the highest year being 1929. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #10,468 of 45,481
- all-time among boys
- 306
- born since 1912
- 1920s
- peak decade
Lewellyn is not among the current top-ranked boys names; 306 have been recorded since 1912.
According to the U.S. Social Security Administration, Lewellyn has been recorded 306 times among boys since 1912, though it is not among the currently most-used boys names, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1912 to 1962.
- #10,468 of 45,481 all-time among boys
- 306 born since 1912
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Lewellyn ranks #10,468 of 45,481 boys' names by all-time recorded births (highest first). 306 born since 1912, peaking in the 1920s.
- #10,468 of 45,481
- all-time among boys
- 306
- born since 1912
- 1920s
- peak decade
Lewellyn's 306 recorded births place it above 76.97% of the 45,481 boys names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Lewellyn's usage pattern, beyond the headline number
Divide Lewellyn's SSA record in two at 1931 and the more recent half accounts for 45% of all births, the earlier half the remaining 55%, a genuinely balanced usage pattern. Its calmest year was 1914, with only 5 births recorded -- set against the 1929 peak of 17, that's the full swing in one name's fortunes.
Lewellyn popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1912–1962
- Peak year (1929)
- 17
- Annual births at peak, across 51 years of records
Lewellyn popularity over time - girls
33 total births recorded since 1917 (Lewellyn as girls' name)
Lewellyn by decade
1920s is the heaviest window (97 births, 32% of the file).
1920s was Lewellyn's strongest decade.
97 babies received the name during that ten-year window, about 32% of all-time use.
Lewellyn births by decade
Total births in each ten-year window
- 1910s
1910s
58 births
- 1920s
1920s
97 births
- 1930s
1930s
66 births
- 1940s
1940s
42 births
- 1950s 33
1950s
33 births
- 1960s 10
1960s
10 births
What this shows Peak: 1920s at 97 births (32% of all-time use).
Frequently Asked Questions
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What to do with Lewellyn's data
- Lewellyn's decade-level peak was the 1920s (97 total births); usage has since declined to 10 in the 1960s -- if you're weighing a "classic revival" angle, the trend line argues against it.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Lewellyn
Nearby Names Like Lewellyn
Names with a similar sound, spelling, or feel to Lewellyn
Compare Lewellyn side by side: Lewellyn vs Lewis Lewellyn vs Lew Lewellyn vs Lewie
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Lewellyn: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1929)
Similar record span (~50 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1912–1962 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Lewellyn draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.